Press release
Natera Announces DECIPHER: A Phase II, Single-Arm Adjuvant Trial in Gastroesophageal Cancer
First-of-its-kind study in gastroesophageal adenocarcinoma using Signatera to guide treatment and assess the efficacy of a novel HER2-directed adjuvant
About this update from Natera, Inc.
[{"type":"text","content":"\nFirst-of-its-kind study in gastroesophageal adenocarcinoma using Signatera to guide treatment and assess the efficacy of a novel HER2-directed adjuvant treatment\n\n\n AUSTIN, Texas--(BUSINESS WIRE)--\nNatera, Inc. (NASDAQ: NTRA), a global leader in cell-free DNA (cfDNA) and genetic testing, today announced a new gastroesophageal cancer trial, DECIPHER, that will utilize the company’s personalized and tumor-informed molecular residual disease (MRD) test, Signatera™, to guide patient selection and assess the rate of MRD clearance in patients being treated for gastroesophageal cancer.\n\n\nDECIPHER (Developing ctDNA Guided Adjuvant Therapy for Gastroesophageal Cancer) is a single-arm, open-label phase II trial, and the first trial to evaluate the efficacy of a HER2-directed antibody-drug conjugate in gastroesophageal adenocarcinoma (EGC) patients in the adjuvant setting. The study plans to enroll 25 patients from more than 10 sites across the United Kingdom. Patients who are Signatera-positive following neoadjuvant chemotherapy and surgery will forgo standard-of-care adjuvant chemotherapy and receive the investigational therapy for a maximum of eight cycles. Signatera will be used to measure MRD-positivity following surgery and serially thereafter, with MRD clearance serving as the primary endpoint.\n\n\n“With an adaptive approach aimed at eliminating MRD, DECIPHER is designed to offer patients a second chance at a cure when they have not responded to standard of care therapies,” said Dr. Elizabeth Smyth, M.D., consultant in medical oncology at Oxford University Hospitals NHS Foundation Trust l and chief investigator of the trial. “Signatera’s personalized, tumor-informed approach, which has demonstrated high sensitivity across several different cancer types including EGC, will be a key component of this study.”\n\n\nThis launch of DECIPHER follows data from the PLAGAST study presented last month at the 2024 American Society of Clinical Oncology (ASCO) Annual Meeting. The data showed that EGC patients who were Signatera-positive following neoadjuvant FLOT (fluorouracil, leucovorin, oxaliplatin and docetaxel) chemotherapy and surgical resection were at an extremely high risk of disease progression by 12 months, despite standard of care adjuvant treatment, and had a 24-month overall survival rate of zero.1\n\n\nGastroesophageal ca...